Blume, A., Blume, B., & Sobel, D. Anna & Bernhard Blume: Photo-Works / Dean Sobel Milwaukee Art Museum. Oktagon [u.a.].
Lua i Stíl Chicago (17ú heag.)Blume, Anna, Bernhard Blume, agus Dean Sobel. Anna & Bernhard Blume: Photo-Works / Dean Sobel Milwaukee Art Museum. Stuttgart: Oktagon [u.a.].
Lua MLA (8ú heag.)Blume, Anna, et al. Anna & Bernhard Blume: Photo-Works / Dean Sobel Milwaukee Art Museum. Oktagon [u.a.].
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.